Log barker



Sept. 23, 1930. c. B. THORNE LOG BARKER Filed Oct. 22/ 1928 s Sheets-Sheet 1 AAMMALNMM/ III-Tm l VVVVVVVVV vvvvv VV Patented Sept. 23, 1930 i 1 1 775 43 STATES PATENT, OFFICE' cent BUSCH'THOBNE, or rmwxnsnuny, oiv'renro, QANADA LOGBARKER Application filed October 22, 1928. Serial No; 314,247.

llheinvention relates to alog barber, asde- Figure 6 is a modification ofthe invention scribed-in the present specification and illusas illustrated in Figures 1 and 2, showing tratedgin the accompanying drawings that the operation of the invention outside of: a. form partofjthe same. regular pocket,

ii The invention consists essentially of the Figure 7 is a plan view of the form of the 5() novel features of construction pointed out invention illustrated in Figured broadly andspecifically in the claims for Figure 8 is a crosssectional-view of the novelty-. following' a description containing cam chains illustrated in Figures 1, 2, 6 and an-;;.explanation in detail of an acceptable and 7 y i V 10 form-:ofthe invention. Figure 9 is a detail showing avpocket and 55 T he,,objects of the invention are to facilia formof cam adaptable to one or other of tate the removalof the bark, so thatthe tree .t-he forms of the invention illustrated. inftheform of thelog is ready to be used for Like numerals of reference indicate corthe, manufactureof timber, lumber, pulpresponding parts in the-various figures.

wood and such other purposes as fall to the Referring to the drawingsand particular- 0 prolpertiesof woodgtomaintain the rubbing ly Figures 1 and 2, the endless chains, indi of the wood in the" removal of'the bark in a cated by the numeral are mounted on systematically regular manner, and thus insprockets 21 and 22, which are suitably sure the stripping of every log from end to driven,and these sprockets are journalled in 2 endpt'o. discard the use of drums. and other the bearings 23 and 24 respectively. 65

cumbersome devices'known for many' years The chains travel in a path directly under past to those familiar with the art; to econthebottom of the pocket 25, in which the omize ijn the consumption of power in the longitudinal slots'26 are made.

maintenance of this barking machine; and The tracks 27 extend along and around the 2 generally to provide trnean's for barking logs sprockets on either side of the chains 20 and 70 that may he" produced at a reasonably low the cams28are supported on said trackways cost; and-that will insure a steady and-large by the rollers 29 and, are connected tosa-id output of barked logs. chains by the pivotalcouplings 30, therefore In the drawings, Figure" 1 is a longitudias these cams are carried by the driven chains,

30 nal sectional view, showing a travelling chain they pass along the slots 26 and project into formed of a cam agitator adapted to operate the pocket 25, so that the logs fed into said in -a" confined area. i V 1 r 1 pocket are kept in a continuous wave-like mo- 'Figure2 is a planviewof the invention as tion, so :as theyrise and fall they turn and illustrated in Figure 1. rub one another and strip the bark.

3 i -Eigme 3 shows a plurality of stationary Another form of cam 31 is mounted in an 8 cam agitators particularly placed in a pocket end Wall of the hopperand suitably driven for: the logs, showing a chain retaining Inem- This cam engages the logs with a view of ex ber. I pelling them from the pocket, that is to say,

t Figure 4: is a plan view of the invention as it keeps raising the finished logs up at that 40 illustrated in Figure 3. end, or if the logs are not finished it keeps Figure 5 is a longitudinal sectional view sending them to the discharge so thatthey showing. a modification of the pocket strucmay enter a following pocket. tureasillustrated in the aforesaid figures and V The inclined way or front wall of the the feed hopper adaptable to this form of the pocket leads to the bottom and the chains, and

4 invention. r y the upwardly inclined rear. wall of the hop- 52, these roller sides comprisingrollersjour-v per leads to the discharge platform 34, and above these the upper chains 35 are secured, and these chains rest on a pile of logs and materially assist in disturbing the logs for their rubbing motions, as there is suflicient room left at each end underthe ends of the chains for the entrance and the exit from the pocket.

The sides of the pocket are preferably formed of rollers vertically and pivotally mounted in the beams 37 and 38, so that there can be no'bin ding of any logs'in' so far as the sides are concerned, but this is not usually considered a necessity, though it materially aids in the operation-under some conditions.

In Figures 3 and 4 a number of pivoted and otherwise stationary cam agitators 47 ;'are shown in successive arrangement, particularly to illustrate their use=with the top chains 48, which restrict the entrancelt) to the pocket 50, and the-exitSlinsaidpocket, as well. as assist the cams 47 in their work in disturbing the logs and rollingthem' about into'rubbing' engagement with one another for'the purpose of strippingcthe'bark. I

In .Fi gure 'ithesame pocket illustrated in Figures?) and 4 is shown with the.roller. sides nalled in top and bottombeams as mentioned in the foregoingQbut in thislparticular casetit is shown in connection with the chains restricting the sides oflthe entrance and oflthe exit, and while there'is'not agreatdeal of differencein the use oftherollers in'this form of the invention and what has been mentioned before, the particular form of'S-shaped-cam insuccessive arrangement in a pocket with the guarding. chains on'theroller sides is extremely eflicient. p

In Figures 6 andi'l'the samefornr of chains and. cams'are shown, butin a different ar rangement, whereby difierent sets'of chains are in one section and "different sets of chains are inanothersection, 'andthese incline to wards one anotheras indicated by the numerals53 and 54-, the Lentrance'at one end, which is .in the' form 'ofan inclined way.55, and. the exit atithe other "end, which is in the forin of .an upwardly Linclined way 56,

leading tocthe runway 57 'This all'follows onin the same way as fully described'in' the details, but the usual form of pocket inthis invention has been discarded and the logs are just simply dumped on to the'plat'form with agitators projecting therefrom'or on to the agitators themselves forming thebottoin, The-consequence of this is that the bark isstrip'ped off and carried away,

simply from the excess of logs in' the area of,

agitation.

In Figure 9 the only'point of novelty is the rotating memberwith several cams projecting therefrom, all these cams having the receding faces 59 and extending at intervals fronrthe-rotor 60,which is suitably driven.

This cam member is shown in the end wall of a pocket and may be used in any form of this invention or in any other invention in the same class.

In the operation of this invention, the logs in any of the forms are fed either directly on to the agitators or on to a bottom through which the agitators project. These agitators in the one instance are the cams drawn by chains and in another case they are the actual sprockets forcing up the chains, while in another case they are a successive arrangement of cams,'but this later idea-is'not altogether new, except in connection with features alreadyeXpl-ained, such as the guarding top chains. These top chains "form a very important feature in several forms of the invention as well as the side rollers, which may be applied in'anytfornrof the invention whatu out to the disturbingelements.

"l lhat I claim is 1., In alogbaflzer, means for supporting logs in a pile andmeans forcreating'a'runlning wave in contact withthe pile'and thereby cause asuccession of upheavals.

2. "In a log'barkerya succession 'of oamshaped members adapted to' reach into a pile of logs and tumble them around and *at'the same" time propel the logs forwardly through the association of saidmembers with-rotary members suitabl driven.

In a-log barker, a'log poeket,-'chain conveyers atthe bottom-of saidpoc'ketya -chain driving mechanism anditumbling members sccured'to said driving mechanism and adapted to bring the 5 legs constantly'into rubbing contact during'th-e forward movement.

4. In a log barker, conveyer chains and-an cuate cams'carried thereby supporting the logs and adapted to tumble thembackwardly andforwardly during thircontinuousilyforward movement.

5. A log barker, comprising-a log support, a chain extending over the pile of logsan'd means for lifting and forwardingthe. logs and bringing them into active 'contactwith the overhead chain.

6L A logbarker, comprising'chainconveyers forming'a log support-anda plurality of disturbing cams secured thereto, said chains being flexibly connected to said cams'antl inclined inwardly from opposite directions and meeting centrally and tumbling the logs into rubbing contact.

7 A log barker, comprising a log pocket, having log supports and disturbing elements along the bottom and roller Walls and a rotating cam at the discharge end lifting the logs on their Way to adischarge chute.

Signed at Montreal, Canada, this 20th day of September 1928.

' CARL BUSCH THOBNE. 

